The size of a rectangular TV screen is given bythe length of its diagonal. What is the width ofa 27" TV screen with a height of 16.2 inches?Round to the nearest tenth.

if the height of the tv is 16.2 we get that the width is:
[tex]w=\sqrt[]{27^2-16.2^2}=\sqrt[]{466.56}\approx21.6[/tex]